Reinforced-concrete crib.



Patented Apr. 9,19I&

2 SHEETS-SHEET I.

R. MELVIN REINFORCED CONCRETE CRIB.

APPLICATION FILED FEB. I0. I9I6.

N. R; MELVIN.

REINFORCED CONCRETE CRiB.

APPucATloN FILED rE.`|o.1916.

Patented Apr. 9,1m]

2 SHEETS-SHEET 2.

siren srnrns retrasa ernten,

NICHOLAS R. MELVIN, 0F MGUNT VERNON, NEW YORK,

nnin'roiacnn-ooncnn'rn care:

l Specification of Letters latent.

Application led February 10, 1916. Serial No. 77,432.

2b all wlw/m t may concern.'

' Be it known that l, NICHOLAS R. MELviN,

a citizen of the United States, and resident 'I of Mountl Vernon, in the county of Westchester and. State 4of New York, have' inas piers, bulkheads, seawallsh or break-w waters, etc., and has more particularly fory its object to provide certain improvements in the crib and method of building the same.

A further object is to provide a crib having reinforced concrete members which are quickly and economically assembled and securely bound together.

A still further object having reinforced concrete members which are adapted to be interlocked, presenting an approximately tight wall, whereby the-interior filling will be prevented from sifting through the crib, especially when such filling as dirt, cinders, sand, etc., isl used.

A still further object is to provide a crib having reinforced concrete ties and' rangers adapted to be alternately assembled and secured at the points of intersection by fas# ten-ingdevices common to both.

A practical embodiment of-my invention is represented in the accompanying draw' ings, in which Figure l represents a detail plan view of aportion of a crib, showing the position of -a superstructure placed thereon in broken lines,

Fig. 2 represents a front ielevation of the same,

Eig. 3 represents a transverse section `taken from front to rear,

Fig. l represents a detail transverse section taken through the means ofsecuring the members forming the crib together,-

Fig. 5 represents a perspective view on a larger scale of one end of a tie,

Fig. d represents a detail front view of one end `of a ranger,

Fig. l represents a transverse section taken in the plane Vof the line Af-li of Fig. 6,

is to provide a crib Fig. 8 is a detail plan view similar to Fig. l of a modified form of crib, y

Fig. 9 represents a front elevation of the same, and

Fig. l0 represents a transverse section taken from front to rear.

patenten api. a, raie.

rThe crib is composed of a series of reinforced concrete members placedin courses one above the other, each member of the course being arranged parallel to its ad'u jacent member and each course laid at right 'angles to the adjacent course. The members forming the courses` will, for the purpose of better identification, lbe called ties and rangers. These concrete ties and rangers may consist of the material used,

e. com risin cement sand ravel or broken stone. rlhey may be molded in any well known and approved form and contain the usual longitudinal steel reinforcing rods.

The ties are denoted by l and are each provided with vertically tapered holes 2.

'lhe outer ends of the ties are formed with odset portions 3 having vertical walls oppositely arranged along their upper and lower faces.

desired shape and length to suit the requirements.

'lhe rangers, denoted by fl, are provided along their upper and lower faces with ribs 5 having inclined walls extending longitudinally throughout the length of the ranger. These y'ribs 5 are cutaway as shown at 6, in Figs. 6 and 7, leaving the ranger at this point rectangular in cross section. The ranger has also formed therein, at this cutaway portion 6, vertically tapered holes 7,

These ties are rectangular inl cross section, but they may be made anyV a crib, the first :f

throughout its length and wider than the regular tie, as shown in Figs. l and 2, the purpose of which is to prevent, sc far as possible, the excessive settlement of the crib as the structure increases.

lill] ln Figs. l to le inclusive, these base ties 8 are formed with a thickened longitudinal central portion and tapered outwardly to the longitudinal edges and have screw threaded rods 9 secured at intervals throughout the thickened portion, in any well known and approved manner, whichv rods extend upwardly to the desired height to which the crib is to be built. AThe rods 9 Vare also spaced apart a distance equal to the distance between the holes 2 in the ties 1. The base ties 8, with their rods 9, are spaced apart a distance equal to the d1stance between the holes 7 in the rangers 4.

'After the base ties 8,v with' their rods 9, have been laid, the first course of rangers are laid at right angles to the ties, so that each ranger in the course will have one of the rods 9 of each of several base ties 8 vpassed through each hole 7 and the ranger resting flat upon the tie. In the present formythe first rangers 10 are formed without the lower rib so that they may lie flat upon the base ties 8, thereby forming a firm vseat uponwhich to build the following Each tie will, when in position, rest with its l fiat lower face in the cutaway portion 6 of the ranger, the offset portion 3 at each end of the tie being arranged so las to overlap the ranger and prevent any outward movement of the ranger.

The neXt course laid will be a course of rangers laid at right anglesto the ties, which rangers will be guided to their position upon the ties previously laid, by the rods-9 pass,- ing through the holes 7 in the rangers, and so on until the height desired has been reached.

It will be seen that by cutting away the portion of the longitudinal ribs 5 at the points of'intersection of the ties, not only admits'of a wider bearingsurface for the ties upon the rangers, but it also allows the lower and upper ribs of each adjacent ranger to approach each other and present an 'approximately tight face to the crib, whkich is advantageous for the filling of the cri v After the last course of rangers has been laid, or at any time during the progress .of

' the work, ferrules 11 may be placed on the projecting upper threaded portion of the rods 9 and'by means of nuts and washers 12.

the ties and rangers may be forced downwardly to their proper position and'securely bound together.

' ln order to give the upper face of the crib an uninterrupted surface, as well as protect the projecting ends of the ties, the upper courses of rangers along the face may be elusive, l have shown a crib built of ties la 'and rangers 15, both of which are recf tangular in cross section. The base tie 16 may be formed wider, but the rangers are all formed alike. Y

It will be understood that when ther crib is built the pockets or cellular openings 17 willbe filled with stone rip rap of'size coml monly known' as one man stone, upon which the superstructure 18 of the reinforced concrete may be placed, as shown in broken lines in theseveral gures..

In the forni shown in Figs. 1 to 4 inclusive, the pockets may, for the purpose of economy, be filled'with dirt, cinders, or sandinstead` of stone.

The advantage of building a crib with these premolded concrete tiescand rangers is made clear from a consideration of the fact that the ties and rangers of this invention are manufactured as separate individual units of such shape, size and length that they can be conveniently handled, and set in the place the crib is to permanently occupy. Furthermore, the life of the crib iS practically unlimited, as it is free from 'decay either from natural causes above the water, or from the action of marine borers, etc., below the water.

It is evident that slight changes may be resorted to in the form, construction and arrangement of the several parts without deso y invention; hence I do not wish to limit myfl self strictly to the structures herein shown and described, except as fhey may be particularly set forth in the claims.

What I claim is:-

1. Av crib comprising a series of reinforced concrete base ties, each having an enlarged base and upwardly' extended rods semured therein, aseries of reinforced concrete ties having vertically tapered holes arranged to be slid on said rods, said ties being provided with bodies rectangular in cross section and portions offset therefrom at their ends, a series of reinforced concrete rangers having vertically tapered holes arranged to be slid on the rods in alterna'te'courses with the ties, said offset portions being arranged to overlap' the outermost rangers above and below each of the ties and means on said rods for securing the ties and rangers together.

2. vA crib comprising a series of reinforced concrete base ties, each having an enlarged.

rae

ifaaasagg base and upwardlyextended rods secured there1n,'a series of reinforced concreteties having vertically tapered holes arranged tol be slid on said rods, said ties'being provided with bodies rectangular in cross section and portions offset therefrom at their ends, a series of reinforced concrete ran ers having verticallytapered holes, arrange lon the rods in alternate courses, with the ties and provided with longitudinal ribs having inclined walls extendlng the len h of the rangers between the ties, said o set portions being arranged to overlap the to be slid outermost rangers aboveand below each of the ties, and means on said rods for securing the ties and rangers together.

3. A reinforced concrete base tie for use in eribshaving a thickened longitudinal central'portionl and tapered outwardly to the longitudinal edges and vertical rods secured at intervals throughout the thjckened portion. In testimony, that I claim the foregoing as my invention, I have signed'my name this first day of February, 1916. A

- NICHOLAS R. MELVIN.4 

